Figure 2: (a) Observed mean sea-level pressure (mb) for 1200 UTC 01 December 1982  
(b) Observed 700 mb height (m) and temperature (deg C) for 1200 UTC 01 December 1982
(c) Observed 500 mb height (m) and temperature (deg C) for 1200 UTC 01 December 1982

(d) Observed 300 mb height (m) and temperature (deg C) for 1200 UTC 01 December 1982